
//校验身份证
function checkCardID(cardID){ 
    var iSum=0 ;
    var info="" ;
    var reg = /^[1-9][0-9]{5}(19[0-9]{2}|200[0-9]|2010)(0[1-9]|1[0-2])(0[1-9]|[12][0-9]|3[01])[0-9]{3}[0-9xX]$/i;
    var city={11:"北京",12:"天津",13:"河北",14:"山西",15:"内蒙古",21:"辽宁",22:"吉林",23:"黑龙江 ",31:"上海",32:"江苏",33:"浙江",34:"安徽",35:"福建",36:"江西",37:"山东",41:"河南",42:"湖北 ",43:"湖南",44:"广东",45:"广西",46:"海南",50:"重庆",51:"四川",52:"贵州",53:"云南",54:"西藏 ",61:"陕西",62:"甘肃",63:"青海",64:"宁夏",65:"新疆",71:"台湾",81:"香港",82:"澳门",91:"国外 "};
    if(reg.test(cardID) === false){ 
    	$.messager.alert("提示","你输入的身份证格式错误");
    	} else{ 
		    if(!city[cardID.substr(0,2)]){ 
		    	$.messager.alert("提示","你的身份证地址编码错误"); 
            }else{
                //18位身份证需要验证最后一位校验位
                if(cardID.length == 18){
                	cardID = cardID.split('');
                    //∑(ai×Wi)(mod 11)
                    //加权因子
                    var factor = [ 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2 ];
                    //校验位
                    var parity = [ 1, 0, 'X', 9, 8, 7, 6, 5, 4, 3, 2 ];
                    var sum = 0;
                    var ai = 0;
                    var wi = 0;
                    for (var i = 0; i < 17; i++)
                    {
                        ai = cardID[i];
                        wi = factor[i];
                        sum += ai * wi;
                    }
                    var last = parity[sum % 11];
                    if(parity[sum % 11] != cardID[17]){
                    	$.messager.alert("提示","你的身份证校验错误");
                    } else {
                    	return true;
                    	}
                    }
            	}
			}
                return false;
     }
    